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ERC-8122 Minimal Agent Registry

DraftERCcreated 2025-12-17requires ERC-6909, ERC-7930, ERC-8048, ERC-8049, ERC-8127

A minimal gas efficient registry design for AI agents

Author: Prem Makeig (@nxt3d)

ERC-165 interface ids

Computed here as the XOR of the selectors each interface defines.

IERC81220x2bb55cdc

Functions this standard introduces (4)

0x6352211eownerOf(uint256)view
0xcc5889bdregister(address,(string,bytes)[])
0x8541d73aregister(address,string,string,address)
0x01fe2345registerBatch(address[],(string,bytes)[][])

Optional extensions (1)

Interfaces the spec defines alongside the core one, which an implementation may or may not carry.

IERC8049SetContractMetadata0xf27f15d7

0xf27f15d7setContractMetadata(string,bytes)

Events (1)

Topic0 is the keccak256 hash of the signature, which is what a log filter matches on.

0x84dbac2cc73d86c0de231a13e28c6dab330f1dc1089f299b411e42683e860cceRegistered(uint256,address,string,string,address)

Depends on (5)

Proposals this one names in its requires field.

What the specification covers

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